A body that has a face area of 100 cm² and a mass of 50 kg is placed on a table. Calculate the pressure exerted by the body on the table.

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Solution

Given:
The face of the body $A = 100 c m^{2} = 100 x {(\frac{1}{100} m)}^{2} = 100 x \frac{1}{10000} = \frac{1}{100} m^{2}$
The weight of the object $m = 50 k g$
Finding the pressure exerted by the object on the table, P:
The force exerted by the body, $F = m g = 50 x 10 = 500 N .$
The pressure exerted by the body (P) = $\frac{F}{A} = \frac{500}{\frac{1}{100}} = 50, 000 P a$
Hence, the pressure exerted by the object on the table = 50,000 pascals.

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